This 2006 dance-pop single, released by SM Entertainment, became a massive hit for Super Junior, topping charts and showcasing the group's evolving sound.
- "U" was the group's first single to reach number one on the music charts, holding the top spot for a total of eight weeks.
- The song was included on their debut studio album, *Twins*, which was released later that year.
- The music video for "U" was directed by Jang Jae-hyuk and filmed over three days in various locations across Seoul.
Super Junior is a boy band formed in 2005 by SM Entertainment, based in Seoul, South Korea. They are considered one of the largest and most popular boy bands in the industry, with a shifting lineup that has included over a dozen members throughout their career. Their 2006 single "U" marked a pivotal moment in their trajectory, solidifying their status as a leading force in K-pop following their debut the previous year.
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